# error code
uint16 UNKNOWN = 50000
uint16 SERVICE_UNREADY = 50001
uint16 SERVICE_TIMEOUT = 50002
uint16 TRANSFORM_ERROR = 50003
uint16 PARAMETER_ERROR = 50004

# warning code
uint16 DEPRECATED = 60000
uint16 NO_EFFECT = 60001

# variables
bool   success
uint16 code
string message
